package com.gocoolmall.vo;

import lombok.Data;

import java.math.BigDecimal;
import java.util.List;

/**
 * 整个购物车
 * 需要计算的属性，必须重写它的get方法，保证每次获取属性都会进行计算
 */
@Data
public class Cart {
    List<CartItem> items;
    private Integer countNum;//商品数量
    private Integer countType;//商品类型数量
    private BigDecimal totalAmount;//商品总价
    private BigDecimal reduce = new BigDecimal("0");//免价格

    public List<CartItem> getItem() {

        return items;
    }

    public void setItems(List<CartItem> item) {
        this.items = item;
    }

    public Integer getCountNum() {
        int count = 0;
        if (items != null && items.size() >0){
            for (CartItem item:items){
                count += item.getCount();
            }
        }
        return count;
    }

    public void setCountNum(Integer countNum) {
        this.countNum = countNum;
    }

    public Integer getCountType() {
        return countType;
    }

    public BigDecimal getTotalAmount() {
        BigDecimal amount = new BigDecimal("0");
        //1、计算购物项的总价
        if (items != null && items.size() >0){
            for (CartItem item:items){
                if (item.getCheck()){
                    BigDecimal totalPrice = item.getTotalPrice();
                    amount= amount.add(totalPrice);
                }

            }
        }
        //2、减去优惠后总价
        BigDecimal subtract = amount.subtract(getReduce());
        return subtract;
    }

    public void setTotalAmount(BigDecimal totalAmount) {
        this.totalAmount = totalAmount;
    }

    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
